Use curproc->p_sysent->sv_flags bit SV_ILP32 for detection of the 32 bit caller, instead of direct comparision with ia32_freebsd_sysvec.
Use curproc->p_sysent->sv_flags bit SV_ILP32 for detection of the 32 bit
caller, instead of direct comparision with ia32_freebsd_sysvec.

Tested by:	pho
Approved by:	des
MFC after:	2 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase